Hinge.



No. 879,542; PATENTED FEB. 18, 1908 J. R. HARTMAN.

HINGE.

APPLIGATION FILED JUNE 29, 1906.

v em

WITNESSES: [1v LWTOR,

A 7701mm '5 JOHN R. jHARTM AN, or DAVENPORT, IOWA.

HINGE.

Specification of Letters Patent.'

Patented Feb. 18, 1908.

Application filed June 29. 1906- Serial No. 324085.

To all whom it may concern:

Be it known that 1, JOHN R.-HARTMAN, a" citizen of the United States,residing at Davenport, in the county of Scott and State of Iowa, haveinvented a new and useful Hinge, of which the following is aspecification.

This invention relates to gate and door hinges, and has for its objectto provide certain new and useful improvements whereby the door willravitate to a closed position and will be e evated to clear obstructionsfrom the floor when being opened. Heretofore, hinges of this characterhave had relatively small flat bearing surfaces to support the hinge inits openpo'sition' and have required that the swinging leaf member beswung through anarc of more than 90 before the door would stand in anopen position.

In view of this objection, it is an important object of the presentinvention to so construct the hinge as to give the'same broad bearingsurfaces to support the door in a stationary position, and to enable thedoor reachin 'such stationary position when it' is Wung t rough an arcof 90 degrees. v

It is also proposed to embody the invention in the nature of a butthinge wherein the liftingaction is produced by a cooperative engagementbetween the hinge pintle and one of the knuckles of the hinge.

A still further object of the invention is to enable the stamping of thehinge leaves from sheet metal.

With these and other objects in view, the present invention consists inthe combination and arrangement of parts as will be hereinafter morefully described, shown in the accompanying drawing and particularlypointed out in the appended claims,'it being understood that changes inthe form, proportion, size and minor details may be made,

within the sco e ofthe claims without de-- parting from the s irit orsacrificing any of the advantages of t e invention.

In the drawing: Fi e 1 is 'a face view of the hinge in its closeposition. Fig. 2 is a sectional view thereof taken through the knucklesof the hinge leaves. Fig. 3 is a perspective viewillustratingtheelements of the hinge separated. Fig. 4 isa view similar to Fig. 2showing an arrangement of the hinge for light doors. c

' Similar numerals of reference designate corresponding parts in all ofthe figures of the drawing.

Referring at first more particularly to Fig. 3 of the drawing, it willbe seen that the stationary member 1 of the hinge is in the nature of aflat plate pierced by countersunk openings 2 for the reception of screwsor other fastenings. At the inner straight upright edge of this 'lateare two eyes or knuckles 3 and 4, 'eac of which is formed by bend' alateral extension of the plate, from w 'ch it will be understood that itis proposed to first stamp the plate from sheet metal and then bend theeyes 3 and 4.- Each eye or'knuckle is in the nature of an 0 enendedtube, the plane of the'bottom of w ich dis osed at substantially rightangles to the 'p ane of the plate 1, the u er outer portions of therespective knuc es being cut,

away or beveled as at 5 and 6. These beveled portions take awaysubstantially one half of the tops of the knuckles leaving the otherhalves 7 and 8 flat, and in substantially horizontal planes when thehinge is in use.

A plug 9 is driven into the lower end of the knuckle 4 and is rigidlyheld therein in any suitable manner, as for instance by means of arivetor othenfastening 10. The lower end of this plug projects below theknuckle and is formed into an ornamental knob 11 of any approved shape.The function of this plug is to close the lower. endof the knuckle 4 andthereby form a socket which is open at its top and closed at its bottom.The inner end of this plug is cut away orbeveled, as at 12, u on thesame side as the beveled portions 5 an 6 of the knuckles, and alsodisposed in substantial parallelism therewith. g

The movable hinge member 13 is a plate of substantially the same sizeand confi ation as the hinge member 1 and isprovi ed substantiallymidway of its ends with an open space between the knuckles 3 and 4, the

difference in length being designed -to accommodate the verticalmovement of the hinge member 13 as will hereinafter ap ear. About midwaybetween the ends knuckle 14 there is a countersunk opening 18.

For pivotally connecting the hin e members when they have been assembledwith the knuckle 14, received between the knuckles 3 and 4, there is ahinge pin or pintle ing as a handle for applying and removing the tionsupon the floor.

pintle. The under side of the knob 21 has a downward extension 22 havingits inner face beveled, as at 23, to correspond with and a lie a ainstthe beveled face 5 of the knuckle 3, w 'le the outer face of thisextension is convexe'd to fill out the knuckle 3 across its beveledportion. After the hinge pintle has been set in place, asuitablefastening 24, preferably a screw, is passed through the opening 18 inthe knuckle 14 and engages the threaded opening 25 of the pintle,thereby to rigidly connect the v 13 and the pintle. With the hingeassembled, as in Figs. 1 and 2, when the hinge member 3 swings back, thelower beveled end 20 of the hinge pintle works over the beveled portion12 in the bottom of the knuckle 4 and causes the pintle and the hingemember 13 to rise, whereby the door will be elevated when swinging openso as to clear obstruc- When the door reaches a position atsubstantially right angles to that of its closed position, the flatlower end 26 of the knuckle l4 and the fiat lower end of the extension22 of the pintle will rest upon the fiat to s 8 and 7 of the knuckles 4and 3, whereby t lde door will be held stationary in its open positionwhen it has been swung through an arc of substantially 90. Upon swingingthe door back towards its closed position, the beveled lower end of thepintle will ride down over the beveled portion of the plug 9, wherebythe door will gravitate to its closed position and will be he d closedby gravitation. h

It will here be explained that the lifting action is accomplishedsolelyby the beveled lower end of the hinge pintle working through thebeveled upper end of the plug 9, these bars being hardened to withstandwear. The beveled portions of the knuckles are not intended to aid inthe elevation of the hinge member 13, but are beveled to permit of thenecessary vertical play of said hinge member.

However, the fiat tops of the knuckles 3 and 4 afford relatively broadbearing surfaces for the flat lower ends of the parts 22 and 14, whenthe dooris open, and these porthe swinging hinge member tions come intoplay when the door has been swungthrough an arc of substantially 90,

wherefore the door will stand open before it has been swung clear backagainst the wall.

By having the lifting action affected by the hinge pintleand the lug 9alone, I avoid hardening the knuck es, which materially reduces theexpense in the manufacture of the hinge, and also enables the provisionof relatively large flat bearing surfaces for the knuckles when thehinge is open, thereby to secure a stable support for the door when thelatter is open.

For light doors, such for instance as screen doors, it is not necessaryto bevel the knuckles 3 and 4, as shown in Fig. 4 of the drawing, itbeing sufficient to have the plug 9 and the pintle 19 beveled at 12 and20 res ectively, to effect the necessary elevation o the hinge member13'. In this arrangement, the knuckle 14 engages or is in closeproximityto the knuckle 4 when the hinge members are in alinement, there being asufficient space between the top of the knuckle 14 and the bottom of theknuckle 3 to permit of the necessary upward movement of the knuckle 14with the hinge member 13. To support the door in its open position, thetop of the plug 9 is flat, as at a, while the lower extremity of thepintle 19'is flat, as at b, so that, when the door is swung open, theflat lower endof the pintle rests upon the flat u per end of the plugand there y supports t e door in its open position.

It will here be explained that the form of hinge shown in Figs. 1, 2 and3, is especially designed for heavyv doors, the knuckles being providedwith flat ends, so, as to form supports 1n addition to the su portafforded by the flat u per end of the p ug 9 and the fiat lower end ofthe pintle 19. While the plug and the pintle may have fiat terminals inthe form of inge shown in Figs. 1, 2 and 3, said flat terminals may beomitted without materially effecting the utility of the hinge, as theflat ends of the knuckles are sufficient to hold the door in its openosition.

Having thus escrib d the invention, what is claimed is:

A hinge comprising two leaf members, one of which is provided withperforated spaced knuckles, the'up er end of each of which is formed bytwo p am surfaces disposed at an obtuse angle to each other and whichlie. in

planes at right angles to the lanes of the leaf member and the meeting eges of which are diametrically dis osed across the knuckles, a' piiiglocated in t e perforation of the lower uckle and having its upper endrovided -.with angularly disposed surfaces ying 1n iio member beingformed by the meeting surwhich is parallel With the beveled surface atfaces of two planes dis osed at an obtuse the opposite end of thepintle.

angle to each other an which lie at right In testimony that I claim theforegoing as angles to the (plane of the leaf member and my own, I havehereto afiixed my signature 5 the meeting e ges of which arediametrically in the presence of two Witnesses.

disposed across the knuckle, a pintlel ing in the perforations of theknuckles, and aving JOHN HARTMAN' a beveled end which engages theinclined end Witnesses: of the plug, said intle having at its head a R.V. MCCORMICK,

10 lug provided Witli a plane. inclined surface JNO. M. HELMIGK.

